"pathline" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "path",
        "3": "line"
      },
      "expansion": "path + line",
      "name": "compound"
    }
  ],
  "etymology_text": "From path + line.",
  "forms": [
    {
      "form": "pathlines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pathline (plural pathlines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The path taken by an individual fluid particle over a given time period."
      ],
      "id": "en-pathline-en-noun-Ymhz8oWM",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "path",
          "path"
        ],
        [
          "individual",
          "individual"
        ],
        [
          "fluid",
          "fluid"
        ],
        [
          "particle",
          "particle"
        ],
        [
          "time",
          "time"
        ],
        [
          "period",
          "period"
        ]
      ],
      "raw_glosses": [
        "(physics) The path taken by an individual fluid particle over a given time period."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "pathline"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "path",
        "3": "line"
      },
      "expansion": "path + line",
      "name": "compound"
    }
  ],
  "etymology_text": "From path + line.",
  "forms": [
    {
      "form": "pathlines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pathline (plural pathlines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Physics"
      ],
      "glosses": [
        "The path taken by an individual fluid particle over a given time period."
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "path",
          "path"
        ],
        [
          "individual",
          "individual"
        ],
        [
          "fluid",
          "fluid"
        ],
        [
          "particle",
          "particle"
        ],
        [
          "time",
          "time"
        ],
        [
          "period",
          "period"
        ]
      ],
      "raw_glosses": [
        "(physics) The path taken by an individual fluid particle over a given time period."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "pathline"
}